Very nice job. I was thinking about Snape/Petunia myself the other day, when I wrote my paper on Snape and wondered if they ever met again after Lily and Snape had stopped being friends. I very much like the scene you just showed us. Thanks for sharing. /M

This is a very credible situation. The one thing missing from Snape's memories is an interaction with Petunia, and this could well be it! Yes, a romantic interlude is not right, but something else definitely. Good job!